Finding the Fourth Proportional to 7,049.89, 9,728.72 and 4,065.85

Step by Step Solution

1. Step 1: Write the proportion equation
   7,049.89 : 9,728.72 = 4,065.85 : x
2. Step 2: Convert to fraction form
   7,049.89/9,728.72 = 4,065.85/x
3. Step 3: Cross multiply
   7,049.89x = 9,728.72 × 4,065.85
4. Step 4: Simplify right side
   7,049.89x = 39,555,516.21
5. Step 5: Solve for x
   x = 39,555,516.21/7,049.89
6. Step 6: Final answer
   x = 5,610.80